'Bicycle revolution' refers to the German term "Fahrradwende", often used in the context of the transformation of the transport sector and climate change mitigation. It refers to a change in transport infrastructure and policy towards more space and safety for cyclists. The aim is to promote cycling while reducing car use. Cycling has significant economic, environmental and health benefits in terms of reduced congestion, noise and pollution, reduced fuel dependency and improved public health. The development of safe infrastructure for cyclists (commuting, etc.), the construction of new cycle lanes, the adaptation of regulatory frameworks and the transport of goods by cargo bike could be important building blocks in the concept of transport transformation. However, the implementation of the Bicycle Plan - which aims to make Germany a "cycling country" by 2030 and has set a target of tripling the share of cycling to 30% - is still slow. Only in a few particularly bicycle-friendly cities, such as Münster, has this goal already been achieved. Here, cycling has already overtaken private motorised transport, which accounts for 29% of all journeys, with 39%. The increasing use of bicycles in cities sometimes creates a high potential for conflict: the redistribution of traffic space within cities - also at the expense of stationary traffic in the form of parking space - regularly becomes a political issue. This topic profile gives a brief overview of the potential, fields of action and international examples of the cycling revolution.